The UV Card
Measure ultraviolet light intensity
Protect yourself from sunburn
What is the UV Card?
A simple, reusable, credit card size device that indicates the ultraviolet light intensity. Excessive levels of UV light can cause sunburn, premature aging of the skin, and skin cancer.
How does it work?
The UV Card measures the strength of UV light (in about 20 seconds), to help you determine the optimum level of sunscreen SPF to use.
With our optional clear plastic card jacket* you may also test suncreen. Apply sunscreen over the protected indicator strip - if it works on the card, it's working on you. Also indicates when to reapply sunscreen. You'll be surprised at how much UV light exposure you receive even on cloudy days, or through windows.
* Available September 1997
Use to test sunglasses, glasses, TV's, computer monitors, and more.
For information about skin cancer, UV light, and the ozone layer
Instructions: Hold the card so that its face is exposed to the light. Count to twenty. Look at the Ultra Violet sensor strip on the side of the card and compare it to the color chart.
How can I check the effectiveness of my sunscreen? The UV Card makes it easy to check the effectiveness of your sunscreen with the optional plastic card jacket. Simply rub a dab of the sunscreen on the cards' sensor strip. (For best results apply a thick, even layer of sunscreen to the sensor strip when it is white.) As long as the protected part of the strip stays white, the sunscreen is still working. When the sensor strip turns blue under the sunscreen, it's time for more protection. You may need a higher SPF value.
Can I check my glasses to see if my eyes are protected from Ultra Violet Radiation? Yes, simply hold your glasses over a portion of the sensor strip out in the sun. If your glasses have UV protection the sensor strip will stay white under the glasses and turn blue in the unprotected regions
What else should I test? There are many tests you can perform. Some computers and TV screens have been found to emit UV. You can also check the window glass in your home, auto and business. Artists can use it to see if the glass covering their artwork is providing UV protection.
Why should I protect my skin and eyes from ultra violet rays? Exposure to ultra violet rays have been shown to cause wrinkles and premature aging of the skin as well as melanoma - a type of skin cancer. These same rays have been implicated in causing cataracts of the eyes. Ultra violet rays may be present at unsafe levels even on cloudy days.